Fire-extinguishing apparatus



K-. E, ALITALO- FIRE EXTINGUISIIING APPARATUS.

arvucmon mm a. a. 1919.

Patented Sept. 28, 1920;

-Evzrexi'or If. 5 401223010 f/Zty UNIF ED STATEs PATENT OFFICE. A

K'US'IAA EMIL AIJITALO, 6F ADO, FINLAND.

FIRE-EXTINGIQ'ISIIING APPARATUS.

a iioatioiiifiiea March a.

To all whom it may concern: 7

Be it known that I, KosraaEiuiL ALI- TALO. auditor, subject of Finland,residing at ilbo, Finland, have invented certain new and usefulImprovements in Fire-Extinguishing Apparatus, of which the following isa specification. r j;

The present invention relates to chemical fire extinguishing apparatusin which water is forced out by gas pressure in the form of a jetthrough the nozzle-piece of a closed vessel.

In apparatus of this kind the requisite pressure is usually produced bymeans of carbonate of soda dissolved in water and by sulfuric acidcontained in a separate receptacle, which acid is caused to mix with thesolution when the apparatus is being used, the carbonic acid therebydeveloped expelling the solution through the nozzle.

The present invention relates to an improvement of fire extinguishingapparatus of this kind and has for its object to produce a rapid andcomplete mixture of the sulfuric acid with the solution of soda, so thatthe apparatus may be brought in full operation in the shortest possibleperiod of time. It has previously been suggested to this end to inclosethe sulfuric acid in a glass receptacle which is crushed by means of apush rod when the apparatus is to be put in operation. This arrangement,however, has the disadvantage that a new acid receptacle must beprocured and inserted after each operation of the apparatus which maycause great trouble in using the apparatus in remote places where it maybe difficult to procure new receptacles. According to the presentinvention a rapid and complete-mixing of the sulfuric acid and the sodasolution is obtained without the acid receptacle being damaged, by saidreceptacle being provided with openings at opposite ends of thereceptacle, which openings are normally closed by plugs or the likeadapted to be operated by means of a suitable push rod, so that thereceptacle is opened at both ends simultaneously thereby facilitating arapid mixing of the acid with the soda solution surrounding thereceptacle on all sides.

The invention is represented on the accompanying drawing in whichFigures 1 and 2 show two different forms of an acid receptacle and Fig.3 a longitudinal section pecification of Letters Patent. P t t t 23; 1297;

iaia, 5m no. 1,493.

through a fire extinguishing apparatus showing the arrangement of theacid receptacle inthc apparatus. 7 I r V In the embodiment shownin Fig.l the cylindrical acid receptacle is provided at t e opposite ends withopenings in which air tight cylhidrical; plugs 2 made of glass or someother material withstanding the influence of the acid are disposed, thesaid plugs 2 being provided with a packing ring 3. which may consist ofa plastic material such as fat.

These plugs are secured to a rod 4 by means o which the plugs may bedisplaced relative to the receptacle, when the apparatus is to be putinto operation, so that the acid contained in the receptacle is broughtin contact with the surrounding soda solution at both ends of thereceptacle.

One opening of the acid receptacle is provided with a flange 5 to whicha clamp 7 consisting of two parts is attached by means of a ring 6.

Secured to the upper tubular end 8 of the said clamp is a push rod 9which is fixed by means of a cross pin 10. The two parts of the clampare kept together by means of a ring 11 arranged on the tubular part 8.The dividing of the clamp has for its purpose to facilitate the fillingof the acid receptacle.

In the example illustrated in Fig. 2 the opening or months of the acidreceptacle and the edges of the plugs fitted therein are elongated andprovided with circular grooves 12, the corresponding extension of theother part being fitted therein. By th1s arrangement the advantage isobtained that the contact surfaces between the plugs and the edges ofthe openings of the receptacle are rendered as large as possible,whereby the packing becomes more secure.

In Fig. 3 an acid receptacle provided with a closing device according tothe invention is shown by way of example as applied to a fireextinguishing apparatus, the nozzle 13 of which is in known mannerintroducible into the vessel and continued by a pipe 14 extending nearlyto the bottom of the metal vessel 15. The push rod 9 is connected tosaid pipe 16, whereas the rod 4 bears against the bottom of the vessel15. The opening of the acid receptacle 1S effected by pushing in thenozzle 13, the vessel 1 being then displaced so that the plugs 2 wilioccupy the positions indicated in Fig. 1, by means of dotted lines.

What I claim as new and desire to secure by Letters Patent of the UnitedStates is 1. A fire extinguishing apparatus comprising a liquidcontainer, a receptacle containing a substance reacting with the liquidin the container, said receptacle being arranged inside the containernear the bottom thereof and provided with openings located one at eachend of the receptacie, plugs connected with one another and arranged toclose the openings in the receptacle, and a push rod connected with thereceptacle and extending outside the container and adapted, on beingoperated, to open said receptacle at both ends simultaneously.

2. A fire extinguishing apparatus comprising a liquid container, areceptacle containing a substance reacting With the liquid in thecontainer, said receptacle being arranged inside the container near thebottom thereof and provided with openings located one at each end of thereceptacle, plugs for closing the openings and a slidable nozzleconnected With said receptacle and adapted, on being pushed in, to openthe receptacle at both'ends simultaneously.

In testimony whereof I afiix my signature in presence of two Witnesses.

KUSTAA EMIL ALITALO.

Witnesses IRJA BLooM UIsT, ELLI ERIKSSON.

